Allen nase



A. NASE.

BOAT PROPELLING MEANS.

APPLICATION HLED JULY 10, 1911.

1,302,951 Patented May 1919'.

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ALLEN NASE, OF JOPLIN, MISSOURI.

IBOAT-PROPELLING- MEANS.

Specification of Letters Patent.

Patented May 6, 1919 Application filed July 10, 1917. Serial No. 179,718.

17 0 or whom it may concern:

Be it known that I, ALLEN NASE, a citizen of the United States, residing at Joplin, in the county of Jasper and State of Missouri, have invented new and useful Improvements in Boat-Propelling Means, of which the following is a specification.

This invention relates to marine propulsion, the object in view being. to provide 1 novel and efficient propelling means especially adapted for use in connection with small boats.

One of the principal objects of the present invention is to provide a propeller of novel and efiicient construction, embodying a buoyant or selfsupporting body having blades or paddles secured to the body in a novel manner whereby the entire propeller is made exceptionally strong and durable and not easily broken upon comingin contact with the bottom or bed of the stream in which the boat is being operated.

Another object of theinvention is to so combine the propelling device with the shaft on which it is mounted that while the propeller is easily detached from its shaft, there is no liability of'the propeller to become disconnected so that it may be turned rela tively to the shaft by which it is carried and actuated.

With the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts, herein fully described, illustrated and claimed.

In the accompanying drawing Figure 1 is a plan view of a boat equipped with several propellers which are driven by a single engine.

Fig. 2 is an enlarged diametrical section through one of the propellers, showing also the connecting means between the propeller and its shaft.

Fig. 3 is a cross section on the line 33. of Fig. 2. I

Fig. 4 is a detail view of one of the heads of the propeller.

Fig. 5 is a fragmentary section showing one of the propeller engaging and interlocking collars or flanges.

The ro eller contemplated in this inventioncomprises a substantially barrel shaped body designated generally at A and comprising a circular series of staves 1 resembling the staves of a barrel or keg but of slightly less bilge or curvature from end to end. The body also comprises the oppositely located heads 2, each head being formed with an annular rabbet 3 to receive the extremities of the staves 1. The construction just described, enables the body of the propeller A to be calk'ed to keep the same. watertight and render the same buoyant.

Secured to the outer surface of the heads 2 of the body are metal disks 4 the diame ter of which is greater than the diameter of the heads 2 and arranged between the disks 4: is a circular series of arcuate paddles or blades. 5. The staves 1, the heads 2, and the paddles or blades 5 are preferably formed of wood to increase the buoyant properties of the propeller. The opposite extremities of the blades or paddles 5 are secured to the inner faces of the disks 4 by any suitable fastening means. One or more circular rods 6 surround the propeller and are received in notches or recesses? formed in the outer edges of the blades or paddles 5. Each rod 6 issplit and the extremities thereof adjacent to the splitare provided with right and left hand threads 8 enabling the extremities of the band to be connected and tightenedby means of a turn buckle 9. Any desired number of bands 5 may be used according to the size of the propeller.

One of the disks 4 is formed with radially elongated slots or recesses 10 to receive corresponding ribs 11 on a collar or flange, 12 formed on or having a fixed relation to the propeller shaft 18. A loose collar or disk shaped plate 14 is placed over the extremity of the shaft 13 and outside of the latter a clamping nut 15 is threaded upon the shaft 13 and prevented from working loose by a cotter pin 16 or its equivalent.

As shown in Fig. 1, two shafts 13 are provided, one being located adjacent the stern of the boat body 17 and the other adjacent to the forward end thereof. Each of said shafts 13 is mounted in bearings 18 secured to the sides or gunwales of the boat. An additional stern propeller may be mounted in suitable brackets or hangers 19 extending from the rear of the boat structure as shown in Fig. 1.

An engine 20 is mounted in the boat preferably near the center thereof and the shaft of said engine is extended at both ends and mounted in bearings 21 fastened to the sides or gunwales of the boat. Fast on the shaft 22 of the engine are sprocket wheels 23.

From the sprocket wheels 23, driving chains 2% extend rearwardly and forwardly around other sprocket Wheels 25 on the front and rear propeller shafts 13. The rear shaft 13 has another sprocket wheel 26 thereon from which a chain 27 extends around a sprocket Wheel 28 on the shaft 29 of the rear propeller. In this Way motion is simultaneously transmitted to all of the propellers. If desired, a clutch 30 is mounted upon the engine shaft 22 to provide for disconnecting the sprocket Wheel 23 from said engine shaft. Another clutch 31 may be provided fordisconnecting the sprocket Wheel 23 from the engine shaft 21. This enables all of the propellers to be driven or if desired the front propellers may be disconnected or the rear propellers.

By reason of the construction described, the propellers are selfsupporting in the Water and their buoyancy is sufiicient to compensate for the combined Weight of the propellers, the propeller shafts, the engine,

and the propeller driving connections hereinabove described and illustrated in Fig. 1. By supporting the engine shaft at both ends, vibration due to the operation of the engine will be materially reduced and the propelling mechanism ill operate smoothly and With high power efiiciency. The propeller may be constructed Wholly of metal if desired.

I claim 1. A propeller comprising a bilged barrel body composed of wooden staves, and heads of like material at opposite ends thereof, metal disks fastened to the heads of the body and extending beyond the periphery thereof, paddles interposed and held between the peripheral portions of said metal disks and having arcuate inner and outer edges conforming to the bilge of the barrel body, one of said disks being formed With radially elongated slots, a propeller shaft extending centrally and longitudinally through said propeller, and a collar havinga fixed relation to said shaft and provided with radially elongated ribs Which are received in the said slots of the adjacent metal disk of the propeller.

A propeller comprising a bilged barrel body composed of Wooden staves, and heads of like material at opposite ends thereof, metal disks fastened to the heads of the body and extending beyond the periphery thereof, paddles interposed and held between the peripheral portions of said metal disks and having arcuate inner and outer edges conforming to the bilge of the barrel body, a propeller shaft extending centrally and longitudinally through said propeller, a circular band surrounding the propeller and received in recesses in the paddles and at greatest diameter thereof, and means for tightening said band.

In testimony whereof I aflix my signature.

ALLEN NASE.

.Gopie: of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

